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Calculate ΔrG° at 25

Question 11

Multiple Choice

Calculate ΔrG° at 25.0 °C for the reaction below. 2 Na(s) + 2 H2O( Calculate Δ<sub>r</sub>G° at 25.0 °C for the reaction below. 2 Na(s) + 2 H<sub>2</sub>O(   ) → 2 NaOH(aq) + H<sub>2</sub>(g)  Given: Δ<sub>r</sub>H° = −366.6 kJ/mol-rxn and Δ<sub>r</sub>S° = −154.2 J/K⋅mol-rxn. A)  -371.2 kJ/mol-rxn B)  -320.6 kJ/mol-rxn C)  -215.4 kJ/mol-rxn D)  +371.2 kJ/mol-rxn E)  +4634.9 kJ/mol-rxn ) → 2 NaOH(aq) + H2(g)
Given: ΔrH° = −366.6 kJ/mol-rxn and ΔrS° = −154.2 J/K⋅mol-rxn.


A) -371.2 kJ/mol-rxn
B) -320.6 kJ/mol-rxn
C) -215.4 kJ/mol-rxn
D) +371.2 kJ/mol-rxn
E) +4634.9 kJ/mol-rxn

Correct Answer:

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